[Effect of protein on the acid-base equilibrium of animals of different ages].

The effect of protein on acid-base balance (ABB) was studied in young and old male white rats. The shifts developing in the ABB system were found to be related to the age of animals and to protein metabolism characteristics. Administration of protein resulted in acidosis that was more manifest and prolonged in old animals. A close relationship was observed between acidotic changes in the ABB system and blood serum levels of amino acids.